A source close to the situation said Robinson was on the football team.

"Police will continue to search for the suspects they believe that were involved in the shooting," Clarkson said. "We have been able to identify one person of interest, but due to the fact that this is an ongoing investigation, we are not releasing that person's identity at this time."

Clarkson said a motive is not yet clear and police continue to interview witnesses.

"Students are safe, the perimeter of this campus is secure," Clarkson said. "Members of the campus community are asked to remain alert and report any suspicious active to campus police."

SLED is taking the lead in the investigation, Clarkson said.

"It's scary, very scary," said witness Frederick Brown.

Brown said he heard his dogs barking at his home near campus around 1:30 p.m., minutes after authorities said the shooting happened.

"I went to the back door as usual and checked to see what they were barking at," Brown said. "As I was opening up my back door, I saw a gentleman run from the corner of my eye around my back. He ran like he was scared or something. It looked like he had on a plant uniform. The shirt and pants were dark blue in color with some kind of writing on the top of the breast, like his name tag and where he was working."

Brown said he heard an engine running outside, it was a Chevy Tahoe.

"I saw another gentleman leaving my driveway, heading back up the road in kind of a fast pace," Brown said.

SC State President Thomas Elzey said the university is in mourning after a loss of one of their students.

"South Carolina State University is saddened today," Elzey said. "We are saddened by the loss of one of our students. Our deepest condolences go to the family of the victim."

Elzey said grief counseling is available to students, faculty and staff.

"He was a very nice young man," Elzey said fighting back tears. "And it hurts, it hurts us all."

Elzey said the safety of students is top priority.

"Again, I want to reassure parents who have children on this campus, that your children are in good hands," Elzey said. "South Carolina State University will maintain a safe and secure environment for our faculty, staff and students."

At least two other shootings have taken place at SC State University in the past 20 years.

In February 1994, 14 shots were fired in a campus dorm. Two students and a male visitor suffered injuries, but all survived. Marcus White, who was a freshman at the time, was sentenced to three years in prison with three years' probation.

In April 2011, 22-year-old Jonathan Bailey was shot during a drug deal in the university parking lot. Then 17-year-old Julian Young was charged in the murder. Young was sentenced in 2012 to 35 years in prison.

South Carolina State is a historically black university founded in 1896.

This is not the first incident on a college campus this week. On Tuesday, Cody Cousins, 23, allegedly shot and stabbed 21-year-old Andrew F. Boldt at Purdue University. No one else was injured in the incident, and officials believe Cousins targeted Boldt, although a motive is not yet known.